Scroll to see break-even price per barrel for oil in 2015 for select oil producers, and click on a country's name for more details. modest oil-price recovery and currency devaluations have lowered breakeven prices for countries like Russia and Nigeria, but some petrostates still need oil prices above $100 a barrel to balance their budgets.
There are dozens of types of gemstones â including diamonds, colored gemstones, and pearls â each with a unique set of physical and optical properties. GIRDLE â The narrow band around the perimeter of a polished or faceted diamond or colored gemstone.
Oval shape gemstone carat weight conversion chart. Millimeter size to carat weight conversions for faceted oval cut Gemstones. This chart depicts optimum weights for oval cut gemstones. Actual weights may vary due many factors related to the best recovery of raw material as accessed by a skilled lapidary.In jewelry the primary goal is to calibrate the overall size for fit. See calibrated Gems to learn why.arquise cut gems, Octagon (emerald) cut chart, Oval cut chart, Pear shape gems, Round cut gems, Round diamond carat conversion chart. For more diamond information. Visit our Four C's diamond grading chart. Find more gemstone information. Visit our Gemstone index.